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mel-nik [20]
3 years ago
11

3(x^2-1) + 4(x^2 - 3) = 13 solve for x

Mathematics
2 answers:
Mrrafil [7]3 years ago
4 0

Answer:

x=2, x=-2

Step-by-step explanation:

3x²-3+4x²-12=13

7x²=13+12+3

7x²=28

x²=4

x=-2

x=2

mart [117]3 years ago
3 0
X =-2 should bring the correct answer
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3 years ago
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Elanso [62]

The two sides are equal and for that reason DE = CE as shown below :

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<h3>Description of rectangle</h3>

Now we all know that a rectangle has four edges which are A, B, C, D.

when we divide the bottom line, which is the line from point C to D into three parts we will have ( DF, FG, and GC )

From the question we know that DF = GC

E is the intersection of A(F) and BG

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We can conclude by saying that in a rectangle two sides are equal and for that reason DE = CE

Learn more about Rectangle : brainly.com/question/22148953

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